ISO 21755-1:2019 PDF

Motorcycles — Measurement method for evaporative emissions — Part 1: SHED test procedure

Название (английский):

ISO 21755-1:2019

Motorcycles — Measurement method for evaporative emissions — Part 1: SHED test procedure

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 24
Дата публикации:: 15 июля 2019 г.
Издание:: ISO IS 21755 edition 1 version 1
ICS:: 13.040.50

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Описание (английский):

This document specifies a basic measurement method by using the SHED (Sealed Housing for Evaporative Determination) test procedure for evaporative emissions from motorcycles. It is applicable to motorcycles equipped with a spark ignition engine (four-stroke engine, two-stroke engine or rotary piston engine).

Технические детали

Технический комитет: ISO/TC 22/SC 38 - Motorcycles and mopeds
SKU: ISO 21755-1:2019

Abstract

Overview

ISO 21755-1:2019 - Motorcycles - Measurement method for evaporative emissions - Part 1: SHED test procedure specifies a standardized method to measure evaporative hydrocarbon emissions from motorcycles using a SHED (Sealed Housing for Evaporative Determination). It applies to motorcycles with spark-ignition engines (four-stroke, two-stroke or rotary piston engines) and is intended for certification, development, research and regulatory testing where accurate evaporative emissions data are required.

Key topics and technical requirements

Test structure: The SHED test comprises a conditioning phase (test cycle and motorcycle soak) and a test phase (tank diurnal breathing loss, optional running loss during the test cycle, and hot soak loss). Mass emissions from phases are summed to give the overall evaporative emission result.
SHED enclosure: A gas-tight, hydrocarbon-impermeable measuring chamber that allows access to the motorcycle, pressure equilibration, and controlled internal temperatures (interior surfaces not below 293 K when cooled). Surfaces must be non-reactive to hydrocarbons.
Analytical systems: Atmosphere monitoring via a flame ionisation detector (FID) hydrocarbon analyser. Key analyser specs include response time to 90% of final reading

Overview

Key topics and technical requirements

Test structure: The SHED test comprises a conditioning phase (test cycle and motorcycle soak) and a test phase (tank diurnal breathing loss, optional running loss during the test cycle, and hot soak loss). Mass emissions from phases are summed to give the overall evaporative emission result.
SHED enclosure: A gas-tight, hydrocarbon-impermeable measuring chamber that allows access to the motorcycle, pressure equilibration, and controlled internal temperatures (interior surfaces not below 293 K when cooled). Surfaces must be non-reactive to hydrocarbons.
Analytical systems: Atmosphere monitoring via a flame ionisation detector (FID) hydrocarbon analyser. Key analyser specs include response time to 90% of final reading

ISO 21755-1:2019 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

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Abstract

Overview

Key topics and technical requirements

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